Research Of The Excavator’s Boom Plate "I"Groove Butt Technology

In this paper, specific research topic for excavator’s boom plate "I" groove butt technology, compared with the original unilateral one-sided welding of "V" groove forming docking process, the dosage of welding wire, working hours and working procedure and other aspects of a more significant reduction, which greatly reduced the excavator boom plate welding processing cost. Facing the fierce competition in the construction machinery market environment, excavator manufacturers to pay more and more attention to cost control,"I" groove butt further development and application of the technology, is bound to be of engineering machinery equipment welding structure design, the manufacture cost of far-reaching influence.From the spray of horizontal swing and groove correction of these two new key technology start docking process, this paper emphatically analyzes the analysis of the two new technologies in the movable boom plate "I" groove docking technology necessity and technical advantages, is analyzed in detail through the origin and tools by welding robot spray adjustment to ensure the accuracy of horizontal swing, thus ensuring weld quality principles and methods. By welding current and deposition rate graph, draw the welding parameters smooth transition in the welding power source output characteristic curve。Using a scatterplot data analysis to increase wire orthotics for wire straightness corrective effect, and studied the welding wire straightness "I" groove docking process results. By test analysis of welding line rate in0.95above, in order to ensure the quality of weld inside. In addition, by investing in wire consumption, working procedure and working hours, and consumables such as savings, it is concluded that "I" shaped butt than the single "V" shaped groove butt significantly reducing the cost of the manufacturing process results.In view of the solidification crack appeared in the process of technology import, by plane and linear analysis methods, research and analysis of the steel material and wire material present in P, S and other low-melting impurities influence for microcracks; from the microscopic point of view to analyze the grain growth the mechanism of solidification cracks. Through experimental data analysis, combined with the actual situation of the production site, L/W ratio by reducing the height of the weld groove width, matching the welding parameters and welding speed control, have solved the problem of solidification cracks. On the "I" shaped groove and unilateral "V" shaped butt processes separately carried out on the deposited metal tensile and impact test, experimental data proved that the movable boom plate "I" groove docking technology can meet the metal mechanical properties of welded structure.